page_load里如何取得linkbutton的CommandArgument值??????

[jlqidan]

private void InitializeComponent()
{
this.Load += new System.EventHandler(this.Page_Load);
LinkButton1.CommandArgument = "LinkButton1";
LinkButton1.CommandArgument = "LinkButton2";
}
page_load函数中如下:
string arg = ((LinkButton)sender).CommandName;
报错是:
指定的转换无效!!!!!!!!!!!!!!

我不想指定linkbutton的click事件处理函数,只想再page_load里面知道那个linkbutton被click了就可以了.

[jlqidan]

string arg = ((LinkButton)sender).CommandArgument

[saucer]

in Page_Load, sender is the Page object itself!!

>>>只想再page_load里面知道那个linkbutton被click了就可以了.

use Request.Form["__EVENTTARGET"]